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Green City has been providing the absolute best in tankless water heater service, repair, and installation for the Seattle area. Whatever your water heating system needs, the experts at Green City Heating and Air Conditioning are prepared and ready to meet them.

A tankless water heater system heats water as you need it instead of continually heating water stored in a tank. While electric tankless water heaters are costlier than tank-water systems, you can save a substantial amount of money every year on your monthly bills while at the same time conserving natural gas. Tankless heaters also last about five to 10 years longer than a tank heater, need less maintenance, take up much less space and provide you with an unlimited amount of hot water. Ask the experienced experts at Green City to find out about different models, repair parts and if a tankless water heater is right for your home!


Bosch Tankless Water Heaters Bosch Logo
Rheem Tankless Water Heaters Rheem Logo
LG Tankless Water Heaters LG Logo
Crown Tankless Water Heaters Crown Logo
York Tankless Water Heaters York Logo


After assessing your current water heating system and pinpointing where the problems lie and how we can help, Green City not only will solve those problems with expert diagnoses and professional installation of one of our state of the art tankless water heaters, we will stand behind our work with a five-year guarantee of our parts and labor.


We have earned our reputation as Seattle’s best heating and air conditioning contractor. Here are some of the reasons our customers trust Green City for all their heating and cooling needs:

  • We will carefully assess your heating and cooling requirements.
  • We will patiently educate you about your new or existing system.
  • We will help you choose an option that fits your overall budget.
  • We will ensure optimal comfort and energy efficiency.
  • We will provide an extended five-year warranty on materials and labor.


  • What about the price?

    At Green City Heating and Air Conditioning our prices are competitive enough to keep us Seattle’s #1 choice. Get a quote today!

  • How can I be assured of top quality for my money?

    Green City has an A rating on Angie’s List with over 400 reviews, as well as being accredited by the Better Business Bureau. You can trust our team of experts!

  • Why not choose a cheaper option?

    When it comes to your furnace and heating system, inferior products, shoddy installation, and bad customer service are not an option. At Green City you get what you pay for and more!

  • How can I know that Green City is the safest and smartest choice?

    We are licensed (#GREENCH866B2), bonded, and insured for $1M in general liability, and our technicians are certified with the Contractor Alliance Network through Puget Sound Energy. So you can rest assured!

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Locations: 1819 Central Ave. S Ste. A27, Kent, WA 98032 | 500 Mercer St. C202-154B Seattle, WA 98109